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A Novel Interceptio...
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Wardill, Trevor J
(författare)
A Novel Interception Strategy in a Miniature Robber Fly with Extreme Visual Acuity
- Artikel/kapitelEngelska2017
Förlag, utgivningsår, omfång ...
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Elsevier BV,2017
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LIBRIS-ID:oai:DiVA.org:uu-342279
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-342279URI
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https://doi.org/10.1016/j.cub.2017.01.050DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Our visual system allows us to rapidly identify and intercept a moving object. When this object is far away, we base the trajectory on the target's location relative to an external frame of reference [1]. This process forms the basis for the constant bearing angle (CBA) model, a reactive strategy that ensures interception since the bearing angle, formed between the line joining pursuer and target (called the range vector) and an external reference line, is held constant [2-4]. The CBA model may be a fundamental and widespread strategy, as it is also known to explain the interception trajectories of bats and fish [5, 6]. Here, we show that the aerial attack of the tiny robber fly Holcocephala fusca is consistent with the CBA model. In addition, Holcocephala fusca displays a novel proactive strategy, termed "lock-on" phase, embedded with the later part of the flight. We found the object detection threshold for this species to be 0.13°, enabled by an extremely specialized, forward pointing fovea (∼5 ommatidia wide, interommatidial angle Δφ = 0.28°, photoreceptor acceptance angle Δρ = 0.27°). This study furthers our understanding of the accurate performance that a miniature brain can achieve in highly demanding sensorimotor tasks and suggests the presence of equivalent mechanisms for target interception across a wide range of taxa.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Fabian, Samuel T
(författare)
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Pettigrew, Ann C
(författare)
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Stavenga, Doekele G
(författare)
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Nordström, KarinCentre for Neuroscience, Flinders University, Adelaide, Australia,Motion Vision(Swepub:uu)karno379
(författare)
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Gonzalez-Bellido, Paloma T
(författare)
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Centre for Neuroscience, Flinders University, Adelaide, AustraliaMotion Vision
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Current Biology: Elsevier BV27:6, s. 854-8590960-98221879-0445
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